JP2579050Y2 - Floor panel and soundproof floor structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a floor structure of a building in which a floor is constructed by a joist, and more specifically, a sound generated on an upper floor side in a building such as a steel frame, a wooden structure or a concrete structure. The present invention relates to a floor base panel used to construct a floor so as not to propagate to a lower floor side.

[0002]

2. Description of the Related Art Life sounds generated on the upper floor include a human voice, television and stereo sounds, movement of a chair, and sounds of a person walking. These include a sound that propagates in the air and a solid sound that is generated by vibrating a building such as a floor vibrating. In the conventional floor structure of a conventional building, in a conventional wooden house, the upper floor is made of plywood, particle board, etc. on a joist orthogonal to a plurality of beams that are almost integrated with the wall. And finish the floor with tatami or carpet on it, or fix the flooring, which is a floor finishing material, directly on the joist. On the lower floor side, a ceiling material is directly attached to the beam, or a ceiling material is attached to a field edge attached to a hanging tree suspended from the beam. Further, in a framed wall construction house, a floor joist having a larger cross section than that of the conventional construction method which serves as a joist and a beam having the above structure is used, and has the same configuration. Even though the materials used in steel-framed buildings are slightly different, the basic structure is almost the same as these.

[0003] When a floor vibration is generated directly by walking or the like on the upper floor side of the joist structure floor or an air sound is generated and the floor is vibrated, resonance occurs in a space between the upper floor side floor and the lower floor side ceiling. It is amplified and causes the ceiling material to vibrate, generating sound. On the other hand, floor vibration vibrates joists, beams, walls, etc., and is transmitted to the lower floor as solid sound. The noise generated on the lower floor is a composite of these sounds. Attach an elastic material to the hanging tree that suspends the ceiling to reduce the above noise even a little, use a method that does not suspend the ceiling from the beam so that the beam and the ceiling do not integrate, improve the soundproofing of the wall, etc. The method has been taken.

[0004] However, the above method cannot provide high soundproofing performance by itself, and when high soundproofing performance is required, it is very complicated to combine several methods. Was something.

[0005] A double floor structure is also well known as a floor structure of a building. This double-floor structure is mainly used for floors of middle and high-rise buildings and condominiums, etc., and a plurality of supports are used to dispose a floor base material on a floor base composed of a concrete floor slab surface, an ALC floor surface, and the like. A space is formed in the space. This space has an advantage that it can be used as a space for electric wiring and water supply piping, and that these works are easy. As the floor base, generally, metal legs or resin legs are attached to a floor base material such as plywood or particle board on site, and the height of the floor base material is adjusted by adjusting the legs. On the other hand, apart from these, there is also a method of laying a foam resin plate under the floor base material over the entire surface of the floor base and making cutouts only in the parts that require piping,
Has been launched.

However, the double floor using the metal legs or the resin legs requires a period of time for on-site work, and uses extremely low hardness rubber or the like for the vibration absorber in order to obtain soundproofing performance. The floor must be soft and finished. As a result, there was a problem in the livability, for example, the floor might feel like sinking when walking. Further, in the method using the foamed resin plate, although the livability is solved to some extent, there is a problem that sufficient soundproof performance cannot be obtained.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an underfloor panel in which floor vibrations are hardly transmitted to beams and walls in order to reduce solid noise caused by floor vibrations. In addition, construction time, which is the most problematic at the construction site, is greatly reduced, the variation in soundproofing performance due to construction is suppressed, soundproofing and comfort are excellent, and in the case of a double floor structure, wiring can be freely arranged on the floor base, An object of the present invention is to provide a floor structure on which piping can be provided.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies on the floor structure of a building and the sound propagation from the upper floor to the lower floor, and as a crosspiece, the same type or different types are used. A non-woven fabric layer having at least one nonwoven fabric layer and at least one high-rigidity layer of the same or different kind is used. It has been found that by applying this method, the floor structure can be constructed simply by arranging it, and the effect of improving the soundproofing performance can be exerted.

That is, the present invention provides a nonwoven fabric layer 1 of the same type or different types.
An underlayer panel comprising a crosspiece composed of at least one layer and one or more high-rigidity layers of the same or different type, and a plate attached to at least one side of the crosspiece and made of a high-rigidity material. A floor structure in which the floor is provided by joists, wherein the floor base panel is arranged above the joists such that the plate material thereof is located at least on the joist side, and the floor base panel is provided above the floor base panels. Soundproof floor structure characterized in that the space is divided into two or more layers in the vertical direction; and a plurality of soundproof floor structures are arranged on the floor base in order to provide a space in consideration of providing piping and the like on the floor base. A double-floor structure provided with a floor base material via a support, wherein the floor base panel is arranged so that the plate material thereof is located at least on the upper side, and the bar material of the floor base panel is provided on the support, Become the above floor material Providing; soundproof double floor structure characterized by Rukoto.

Hereinafter, the present invention will be described in detail. The floor base panel of the present invention has a structure in which a frame having a specific nonwoven fabric and a plate material are fixed. In the floor base panel of the present invention, the floor impact sound can be reduced by a combination of a crosspiece and a plate material having a specific non-woven fabric. It is noteworthy that even those which have been found to be very difficult to use can be used. For example, wood flooring materials such as single-layer flooring and composite flooring, stone materials, and inorganic flooring materials such as ceramic tiles can be used. Of course, it does not preclude the use of a finishing material such as carpet, tatami mat, cork, linoleum and the like, which itself has a light floor impact sound improving performance.

The crosspiece is composed of a plurality of layers, and it is an essential condition that at least one layer uses a nonwoven fabric. As the nonwoven fabric, a needle type, a spun bond type, a heat fusion type or the like is used alone or in combination, and examples of the fiber include straight hair type fibers, hollow type fibers, and crimp type fibers. It is preferred to use fibers that are prominent. As a fiber having a remarkable crimp (crimp type fiber), there is a latent crimp type fiber which is made by spinning two kinds of resins having different thermal characteristics such as polyester or polypropylene at the same time to form a single fiber. In addition, the fibers are remarkably crimped by the heat treatment. Generally, a non-woven fabric using latently crimped fibers and crimped by heat treatment are commercially available. In the present invention, it is desirable to use a nonwoven fabric containing 40% or more of the fiber. If it is less than 40%, it is difficult to obtain the desired soundproof performance. The nonwoven fabric not only has moderate elasticity and can reduce impact vibration, but also can reduce impact by converting impact energy into thermal energy by friction between fibers. The thickness of the layer made of the nonwoven fabric is desirably 3 mm or more and 50 mm or less, preferably 5 mm or more and 20 mm or less, in consideration of soundproofing performance and living performance such as walking sensation. If the thickness is less than 3 mm, the desired soundproof performance cannot be obtained. If the thickness exceeds 50 mm, the living performance and floor strength are impaired even if the material of the nonwoven fabric is considered. The shape of the non-woven fabric is not particularly defined, and may be a flat shape, a loop-shaped raised one like a carpet, a brushed one by one, an uneven shape, or a wavy shape. A variety of shapes such as the one used are used.

The other structural members of the crosspiece are made of a material having high rigidity and support a floor surface finishing material laid on the crosspiece, a load on the floor, etc., and locally deform to uniformly disperse the load applied to the nonwoven fabric. If it has enough rigidity and thickness,
Plywood, particle board, wood board such as MDF, metal board such as aluminum board and stainless steel board, ceramic board such as concrete board and scalp board, rigid resin board such as acrylic and PVC, and noncombustible lightweight composite board (for example, Kosho 56-40116
Various materials can be appropriately selected in an appropriate shape, such as those disclosed in Japanese Patent Application Laid-Open No. H11-157, however, a material that has predetermined rigidity but is broken by an impact applied to the floor is not suitable.

When the floor base panel of the present invention is used in a general joist floor structure in a wooden house or a steel frame house,
It is an essential condition that the plate material is arranged at least on the joist side, that is, below the crosspiece. The board is used to divide the space under the floor facing material. As a material, a resin plate, a metal plate, a wooden plate, an inorganic plate, or the like is used, and not only a flat plate but also a corrugated plate having irregularities can be used. Further, a plate having holes formed for the purpose of improving the soundproofing performance, for example, a plate having a large number of holes of about 5 mm formed in a plywood having a thickness of 4 mm may be used as the lower surface plate.

The crosspiece is required to retain the upper space when the space below the floor surface finishing material is divided, and to have a strength capable of withstanding the floor and the floor load. The components of the crosspiece, that is, the nonwoven fabric layer and the high-rigidity layer are as described above. In such a joist floor structure, it is not an essential condition that a plate is arranged above the crosspiece. Because, when the floor surface finishing material has sufficient rigidity as a flooring material such as a composite flooring, and does not hinder the fixing to the crosspieces, even if it is directly fixed on the crosspieces, it is sufficient as a floor. Function,
Also, there is no problem in dividing the underfloor space. Carpet, linoleum,
When the floor does not function as a floor without a floor substrate such as cork, it is necessary to fix a plate having sufficient strength as a floor material on the upper side of the crosspiece as the floor substrate.
It is necessary to use a high-rigidity material that does not itself undergo extreme vibration or destruction by the impact force itself as the plate material used above the crosspiece. As a material considered as a material of the floor base panel, for example, plywood, MDF, particle board,
Wood cement board, ALC board, Cical board, cement board,
There are metal plates and the like. In addition, even if it alone has insufficient rigidity, the same or different thickness,
If the same material or another material can be used as long as rigidity is exhibited by laminating two or more layers. The space under the floor facing can be efficiently partitioned using the flooring panel of the present invention. It is desirable that the height of this space is 3 mm or more, preferably 10 mm or more in the internal space of the floor base panel. If the space height is less than 3 mm, the effect of simply dividing the underfloor space into two or more layers can hardly be obtained.

In such a joist floor structure, the thickness of the floor base panel, that is, the total thickness of the plate material and the crosspiece is 20 mm or more and 200 mm or less and 40 mm or more and 150 mm or less in consideration of the purpose of maintaining a space in the panel. Is desirably used, and a plate member and a cross member may be laminated at appropriate positions. The size of the panel is not limited, but considering the ease of handling, it is 455 mm × 900 mm, 900 mm × 900 m
m, a size of 900 mm × 1800 mm, etc. can be considered, but this may be determined in relation to a support such as a joist supporting the floor base panel. In addition, the height of the space in the floor base panel is 3 mm or more as described above, but according to the present invention, the space area of the plane should secure 75% or more of the area of the floor base panel. Can be. If the space on the lower surface of the floor facing material can be divided into two or more layers even if the space area is less than 75%, the present invention does not fall outside the scope of the present invention, but the present invention also includes the purpose of reducing the weight of the floor base panel. Therefore, it is desirable that the space area is 75% or more. However, depending on the type and arrangement of the crosspieces, the floor base panel top plate or floor surface finishing material above the crosspieces may be subjected to a load when the load is applied to the crosspiece and the floor base panel top plate or floor surface above the crosspieces. There is a case where a sufficient soundproofing effect cannot be obtained due to an increase in deflection of the finishing material and a decrease in apparent rigidity. For example, a basement panel having a width of 100 mm and a floor base panel having a width of 800 mm and a width of 50 mm,
Compared with the floor base panels arranged at 0 mm intervals, the latter has higher soundproofing performance even if the space area per plane per floor base panel is the same. This is considered to be because the vibration of the plate material on the upper side of the crosspiece which is not suppressed by the crosspiece in the gap portion is suppressed by the latter arrangement of the crosspiece.
A sound absorbing material such as glass wool or rock wool may be placed in the space held by the crosspiece to improve the soundproofing performance.

When the floor panel of the present invention is used in a middle-high-rise building or condominium with a common double floor structure, the plate is disposed so as to be located at least on the upper side, and the plate is placed on the floor substrate. It is used as a base material for floor surface finishing materials and is one of the important components of the present invention. This plate material can be appropriately selected as long as it has a rigidity enough to support the floor surface finishing material laid thereon and the load on the floor, or to support the crosspiece, but the plate material itself is affected by the impact force. It is necessary to use a board with high rigidity that does not cause extreme vibration. For example, when using plywood or particle board, it is desirable that the thickness be 9 mm or more, preferably 12 mm or more. Other materials that can be considered as flooring materials include, for example, wood cement boards, ALC
There are a board, a calcical board, a cement board, a metal panel and the like. In addition, even if the rigidity is insufficient by itself, if the rigidity is manifested by stacking two or more layers of the same material or another material with the same thickness or different thicknesses. Can be used. Further, as a method for improving the vibration-proofing properties of the plate material, a material obtained by attaching a vibration damping material such as a rubber sheet or an asphalt sheet to the base material can be used. Even if the rigidity of the plate material is slightly insufficient, if the required rigidity can be obtained by integrating with the floor surface finishing material, it is interpreted as satisfying the above requirements.

In this case, the height of the crosspiece is preferably not less than 20 mm and not more than 250 mm and not more than 30 mm and not more than 150 mm in consideration of the purpose of passing pipes through the underfloor space, and the nonwoven fabric layer and the rigid layer are appropriately positioned. What is necessary is just to laminate. The thickness of the floor base panel is preferably 20 mm or more and 300 mm or less, more preferably 40 mm or more and 200 mm or less in consideration of the purpose of maintaining a space in the panel. Although the size of the panel is not limited, considering the workability in construction, 600 mm × 900 mm, 900 mm × 900 mm, 90 mm
A size such as 0 mm × 1800 mm is conceivable, but this may be determined in relation to the size of the portion where the floor base panel is laid. Also, the plane area of the crosspiece in the panel is:
7% to 60% of panel area, preferably 10% to 4%
It is good to make it 0%. If it is less than 7%, the bending of the plate material becomes large when a load is applied, and the apparent rigidity decreases. If it exceeds 60%, the ground contact area to the floor base is large, and the floor vibration transmission area is large, so it is soundproof. The performance deteriorates, which is not preferable. When laying the floor base panel on the floor base, it is desirable to efficiently lay the floor finishing material in consideration of fixing the floor finishing material in a highly safe manner, and it is not always necessary to arrange the panels without gaps. Further, the plate portion of the panel may be used by placing a base plate of a surface finishing material.

In the present invention, a sound absorbing material such as glass wool or rock wool can be put in the space inside the floor base panel as one of means for further improving the soundproofing performance. Inserting a sound absorbing material is one of effective means that does not impair walking sensation, since it is possible to enhance soundproofing performance without changing the strength of the entire support.

FIG. 1 shows an embodiment of the present invention (joist floor structure).
4 to FIG. 1 to 3 show an example of a floor base panel, and FIG. 4 shows a sectional view of an example of a floor finishing method using the floor base panel of the present invention. In these figures,
1 is a floor base panel, 2 is a plate, 3 is a bar, 4 is a material having high rigidity (rigid body), 5 is a nonwoven fabric, 6 is a sound absorbing material, 7 is a beam, 8
Is floor finishing material, 9 is baseboard, 10 is trunk difference, 11 is field edge, 1
2 is a ceiling, 13 is an outer wall, 14 is an inner wall, 15 is a joist, and 16 is a space.

FIG. 1 is a perspective view of a floor base panel 1 in which a plate 2 is fixed to the lower surface of a frame 3, and the crosspiece 3 is a plate 2 with a nonwoven fabric 5 interposed therebetween. 2 and 3 are perspective views of the floor base panel 1 in which the plate member 2 is fixed to the upper surface and the lower surface of the crosspiece 3, respectively, showing the case where the arrangement of the crosspieces is different. Here, the crosspiece 3 has a configuration in which the nonwoven fabric 5 is sandwiched between the plate materials 2, but a crosspiece having two or more nonwoven fabric layers can also be used. FIG. 4 shows a sectional view of an example of a room when the floor base panel of FIG. 2 is used in a wooden building.

FIG. 5 shows an embodiment of the present invention (double floor structure).
13 to FIG. 5 to 8 show cross-sectional views of a floor base panel and a surface finishing material on a floor base, and FIGS.
Shows a plan view in which the floor surface finishing material is omitted. FIG.
1 is a perspective view of the cross-sectional structure of FIG. In these figures, 1 is a floor base panel,
2a is a plate fixed to the panel, 2b is a plate extending between the panels, 3 is a bar, 4 is a material having high rigidity (rigid body), 5 is a nonwoven fabric, 6 is a sound absorbing material, 8 is a surface finishing material, and 16 is a space. ,
17 is the floor base and 18 is the underfloor piping. FIG. 5 is a cross-sectional configuration diagram of the surface finishing material 19 on the floor base panel 1 on the floor base. The crosspiece 3 of the floor base panel 1 is obtained by laminating a highly rigid material (rigid body) 4 on a nonwoven fabric 5. Things. FIG. 6 is a sectional view similar to FIG.
The crosspiece 3 is obtained by laminating a rigid body 4 under a nonwoven fabric 5. FIG. 5 shows a mode in which the panels are spaced apart because the surface finishing material 8 has rigidity, and FIG.
This is an aspect in which the plate material 2b is passed between the panels because there is no rigidity. FIG. 7 shows a crosspiece 3 of a floor base panel 1 in which a nonwoven fabric 5 is laminated between rigid bodies 4, 4. FIG. 8 is a cross-sectional configuration diagram similar to FIG. 7, but the crosspiece 3 of the floor base panel 1 is formed by laminating nonwoven fabrics 5, 5 in a form sandwiched by rigid bodies 4, 4 and 4. 7 and 8
FIG. 3 shows an embodiment in which the floor base panels are arranged without leaving a gap. FIGS. 9 and 10 show an example of the arrangement of the floor base panel and an example of the piping 18 passing between the supports in a form corresponding to FIGS. 5 and 7. FIG. 10 shows an embodiment in which the crosspiece 3 of the floor base panel is originally fixed to all four sides of the panel, and a cutout portion is formed only in a portion where the pipe 18 passes. FIG. 11 is a partially broken perspective view for illustrating a use mode when the support member arrangement of FIG. 9 is performed in the cross-sectional configuration of FIG. It should be noted that these illustrated embodiments are merely examples, and it is needless to say that the embodiments can be variously modified without being limited to these drawings and within the scope of the present invention.

[0022]

The floor panel of the present invention transmits sound and vibrations generated on the upper floor side and penetrates the floor material, attenuates in the specific crosspiece and the space held by the crosspiece. The vibration is further attenuated by transmitting through the plate material on the lower surface of the floor panel. Accordingly, sound and vibration transmitted through the lower floor ceiling are significantly reduced. Therefore, the sound and vibration transmitted through the ceiling surface on the lower floor side are significantly reduced. In addition, vibrations transmitted through the joists and beams and reaching the wall are significantly reduced by transmitting through the floor base panel. In the soundproof double floor structure of the present invention, the specific nonwoven fabric and the space constituting the crosspiece attenuate floor impact noise from the upper floor side, and the attenuated sound and vibration are further transmitted through the floor base and attenuated. By doing so, floor impact noise can be reduced. It is considered that the floor impact sound can be effectively reduced in this way.

[0023]

EXAMPLES Examples of the present invention will be described below along with comparative examples. (Example 1) In a conventional construction method building, a floor base panel of the present invention was placed on a joist to construct a floor. The panel of FIG. 2 was configured as shown in FIG. The joist spacing is 455mm, the bottom plate of the panel is 9mm plywood, the crosspiece is 50mm wide, 15mm plywood and 10mm thick from above and below
Sandwiched between non-woven fabrics consisting of latently crimped fibers of polyester. The upper plate is a 20 mm particle board, and the size of the panel is 900 mm × 900 mm. In a space below the floor base panel, 10 kg / m ³ glass wool having a thickness of 50 mm was spread as a sound absorbing material. The floor surface finish was a 12 mm color floor.

(Comparative Example 1) The floor base panel of Example 1 was replaced with a plywood of 15 mm, and a floor having the same configuration except for all other conditions was constructed. Table 1 below shows the results of light floor impact sound measured using a tapping machine in accordance with JIS A1418 "Method of measuring floor impact sound level at building site" by constructing floor materials with the above combinations.
Shown in

[0025]

[Table 1]

As is clear from these results, it can be seen that the example has a significantly lower floor impact sound level than the comparative example. In the examples, the walking feeling was also good.

Example 2 A floor was constructed on a 150 mm concrete floor slab surface using the floor substrate of the present invention. The surface finishing material was a color floor having a thickness of 12 mm, the board material of the floor base panel and the board material provided between the panels were 20 mm particle board. The rigid part of the crosspiece is composed of two layers of 15 mm plywood and 20 mm particle board. The nonwoven fabric is made of 10 mm thick polyester non-woven fabric with latent crimped fibers. The panel is 600 mm wide and 90 mm long.
It is 0mm and has three bars of 80mm width and 600mm length. The arrangement interval of the panels was 300 mm. Glass wool of 10 kg / m ^{3 and} thickness of 50 mm was fixed as a sound absorbing material in the space of the panel. In addition, as a result of measuring the construction time of the floor constituted by this panel, the time required for finishing the floor of 20 m ² was 60 minutes. Since it took 4 hours or more on the floor using the metal legs, it was found that the panel of the present invention had a great effect on shortening the construction time.

Comparative Example 2 A non-woven fabric was used, and all other structures were the same as in Example 2.

(Reference Example 1) The nonwoven fabric was constituted by using a nonwoven fabric consisting of ordinary fibers instead of latently crimped fibers, and all other constitutions were the same as in Example 2.

(Reference Example 2) In Example 2, the nonwoven fabric was formed into a nonwoven fabric using a latently crimped fiber of polyester having a thickness of 1 mm (less than 3 mm).
All other configurations were the same as in Example 2.

The floor material is constituted by the above combination, and is JIS A141
8 “Method of measuring floor impact sound level at building site”
Table 2 below shows the results of measurement of lightweight floor impact sound by a tapping machine according to the above.

[0032]

[Table 2]

As is clear from these results, it can be seen that the example has a significantly lower floor impact sound level than the comparative example. Further, according to the comparison with the reference example, it can be seen that a nonwoven fabric made of crimped fibers and a nonwoven fabric layer having a thickness of 3 mm or more are preferable in reducing floor impact noise.
In the examples, the walking feeling was also good.

[0034]

[Effects of the Invention] As described above, according to the floor base panel of the present invention, when sound or vibration generated on the upper floor side penetrates through the floor material and is transmitted to the inside of the panel, a specific cross member and a specific cross member are provided. It is attenuated in the space held by the material, and floor impact noise is effectively reduced. In addition, since the floor base panel has a function to effectively reduce the floor impact sound, it is possible to maintain the rigidity of the upper floor surface high, using various floor surface finishing materials, The soundproofing performance can be significantly improved while maintaining a comfortable walking feeling. In addition, since the floor impact sound can be reduced by such a specific floor base panel, a material having inferior sound insulation performance, which cannot be used conventionally as a floor surface finishing material, can be used, and a floor finish meeting needs can be achieved. Further, the floor base panel of the present invention has an advantage that the work on the floor base is very easy and the construction period is short.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor base panel of the present invention.

FIG. 2 is a perspective view of the floor panel of the present invention.

FIG. 3 is a perspective view of the floor panel according to the present invention;

FIG. 4 is a cross-sectional configuration diagram showing an example of a setting when the floor base panel of the present invention is used in a wooden building.

FIG. 5A is a cross-sectional configuration diagram when the floor base panel of the present invention is arranged on a floor base and finished with a surface finishing material, and FIG.
FIG. 3 is a cross-sectional configuration diagram of a panel alone.

FIG. 6A is a cross-sectional configuration diagram when the floor base panel of the present invention is arranged on a floor base and finished with a surface finishing material, and FIG.
FIG. 3 is a cross-sectional configuration diagram of a panel alone.

FIG. 7A is a cross-sectional configuration diagram when the floor base panel of the present invention is arranged on a floor base and finished with a surface finishing material, and FIG.
FIG. 3 is a cross-sectional configuration diagram of a panel alone.

FIG. 8A is a cross-sectional configuration diagram when the floor base panel of the present invention is arranged on a floor base and finished with a surface finishing material, FIG.
FIG. 3 is a cross-sectional configuration diagram of a panel alone.

FIG. 9 is a plan view of the floor base panel of the present invention in which the surface finishing material is removed when the floor base panel is arranged on a floor base in the configuration of FIG. 6;

FIG. 10 is a plan view of the floor base panel of the present invention in which the surface finishing material is removed when the floor base panel is arranged on the floor base in the configuration of FIG. 7;

FIG. 11 is a partially broken perspective view for explaining a use mode when the support is arranged in FIG. 9 in the cross-sectional configuration in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor base panel 2 Board material 2a Board material fixed to the crosspiece 2b Plate material passing between the crosspieces 3 Crosspiece 4 Rigid body 5 Nonwoven fabric 6 Sound absorbing material 7 Beam 8 Floor finishing material 9 Baseboard 10 Body difference 11 Field edge 12 Ceiling 13 Exterior wall 14 inner wall 15 joist 16 space 17 floor base 18 underfloor piping

Claims (2)

(57) [Scope of request for utility model registration] 1. A crosspiece comprising one or more non-woven fabric layers of the same or different kind and one or more high-rigidity layers of the same or different kind, and a plate attached to at least one side of the crosspiece and made of a high-rigidity material. monolith der is, subfloor panels nonwoven and wherein this <br/> and consisting of crimped-type fibers. 2. A floor structure in which a floor is provided by a joist, wherein one or more non-woven fabric layers of the same or different kind and a high rigidity of the same or different kind are provided.
Bar composed of at least one layer, and at least one side of the bar
Integrated with a plate made of high-rigidity material
Using a floor base panel that is, the floor base panel is arranged above the joist so that its plate material is located at least on the joist side, and the space below the floor surface finishing material provided above the floor base panel is in the vertical direction. 2
Soundproof floor structure characterized by being divided into layers or more.